Chuckless and centerless machining device



May 17, 1932. of R. BRINEY .CHUCKLESS AND CENTERLESS MACHINING DEVICE Filled Aug. 18. 1927 2. Sheets-Sheet l ff W /J i9 www I May 17, 1932- o. R. BRINEY 1,858,235

CHUCKLESS AND CENTERLESS MACHINING DEVICE Filed Aug. 18, 1927"'A 2 Sheets-Sheet 2 A gg* XM I Patented May 17, 1932 UNITED STATES tssazss OTTIS R. BRINEY, F PONTIAC, MICHIGAN CHUCKLESS .AN D CENTERLESS MACHINING DEVIC Application filed August 18, 1927. Serial No. 213,809.

My invention relates to machining devices generally and more particularly to devices for machining articles or work while the same is being rotated.

The main object of my invention is a simple and inexpensive device for conveniently and economically machining articles or work without centers and without'chucks or other similar devices: Other objects will appear,- or become apparent or obvious, or will suggest themselves during the description of the device shown in the accompanyin(lV drawings in which y iig. 1 is a plan viewof a device embodying the features ot' my invention, partly broken away substantially to the line 1-1 indicated in Fig. 1, and shows the horizontal relationsl of the. elements.

Fig. 2 is a section taken in a vertical plane indicated by the line 24-2 in Fig. 1 and shows the interior relations of the elements of the idler and the abutment mechanisms.

Fig. 3 is a front view of Fig. 1 and shows the vertical relations of the elements.

Fig. 4 is a rear end View of Fig. 1 and shows the vertical relations of the pulleys and idlcrs and gears.

Fig. 5 is a section taken in a. vertical plane indicated by the line 5 5 in Fig. 3 and shows the relations between the stubs and the spindles and the work.

Similar reference/characters refer to similar parts throughout the views.

Referring now particularly to the device shown in the accompanying drawings.

The head A has the projection tolocate the. head on a machine Vor on any other suitable base; this projection is here shown round so that the head and the mechanism mounted thereon or therein can be swiveled so that taper or spherical work can be machined therewith.

l Thehead A also has the two bores 11 and 12 suitably spaced from each other and also has the bore or channel 18 in the arm 14 and the bore or channel 15 in the body portion. The bores or channels 13 and 15 are both round and are positioned at right angles to the hores 11 and 12 in the present instance. Other forms of bores and other angular relations between the bores be used.

The stub 16is journaledin the bore 11 and has the bore 17 the longitudinal axis of which is parallel as well as eccentric with the lon- 55 gitudinal axis of the stub 16.

The stub 18 is journaled in the bore 12 and has the bore 19 the'longitudinal axis of which is parallel as well as eccentric with the longitudinal axis of the stub 18.

Angular relations b/etween the axes of the stubs and the bores therein can be used when so desired.

The spindle 2O is journaled in the bore 17 by means of the ball bearings 21 and 22 and has the conical head 23. The spindle 24 is journaled in the bore 19 by means of the ball bearings 25 and 26 and has the head 27. Bearings other than the ball bearings shown can be used when so desired. The pulley 28 is secured to the spindle 2O and the pulley 29 is secured to the spindle 24.

For the purpose of economy in structure, the stubs as well as the spindles and pulleys and bearings (includingr the bearings to be mentioned presently) and the work contact members are duplicates of each other.

The cylindrical plug or work contact member 30 is mounted on the conical head 23 and the cylindrical plug or work contact inemay be and can -ber 31 is mounted on the conical head 27.

Both of the plugs are duplicates of each other and rotate with the corresponding` spindles.

The taper of the conical heads is greater than the sticking angle of tapers to permit the plugs to be easily and conveniently removed from and attached to the spindles when desired for such purposes as trueing up the plugs or substituting variously sized plugs.

` The cylindrical plug or abutment member is held against the head A by means of the screw 33 which extends through the plug and through the slot 34 in the-head and is threaded into the plug or carriage 35 which d is slidable longitudinally in the channel 15. 9 Due to the fact that the carriage 35 can slide or move longitudinally in the channel 15 and that the screw 33 can slide in the slot 34, the plug 32 can be moved toward and away from the work-:B to permit of adjustmentpof the work into desirable relations with the plugs 30 and 31. When the plug 32 is moved into a desired position, the screw 33 is tightened whereby the plug 35 is clamped against the Wall of the channel 15 and the plug 32 is clamped against the head A to prevent the rotation aswell as other movement thereof. When a portion of the circumferential surface of the plug 32 becomes worn, or when a' new portion of this circumferential surface is to be brought into work engaging position for any reason, the screw 33 is loosened temporarily whereupon the plug 32 can be rotated on the screw to move a desirable portion of this :circumferential surface intoy work engaging position; upon tightening of the screw 33, the plug 32 will be fixed in position rotatively as well as bodily to forni a fixed abutment for the work B.

means of the ball bearing 38 and the idler 39 is journaled on the stud 40 by means of the ball bearing 41.

The pulley 42 and the drive pulley 43 are 'ournaled on the stud 44 by means of the ball earings 45. The stud 44 extends longitudinally through the pulleys 42 and 43 and through the slot 46 in the arm 14 and is iX- edly threaded into the plug or. carriage 47, which is slidable longitudinally in the chan-y nel 13. The compression spring48 is placed-- into the channel 13 and extends between theiv inner end of the plug 47 and the inner endortv4 bottom of the channel 13. The spring ners. .mally tends to'move the carriage 47 and the-. pulleys 42 and 43 outwardly for purposesV which will vappear presently. vl .40'- The sheave 49 is gournaled on the screw 59 which is threaded into the head-A. .1

' 1 Oneend lot' the cable 51 is secured tothe stub 16 in the groove 52 therein and extends i i" over the sheave 49 and has the weight 53 on theiotherend thereof for purposes appearing presently.i 1

Y 3 The handle54is clamped onto the end of.'l the stub 16 so that the stub 16 can easily be'.-

I rotated to rotate the spindle 24 "around theA ably in loose mesh with each other, are se` v I go. longitudinal axis of the stub .16 and thereby either release or Contact the work B. The

weight 53 normally tends tofrotateithestub 16 so that the plug 30 contactsthelwork B. The set screw 55 is threaded into the head and abuts the bottoni of the groove 56 in thel stub 18 to, lock the same in position-when so f. f desired. f -v lWlien'it i'sfdesired to rotateboth of -thef stubs in unison', the gears' and 58, prefercured to the corresponding ones of the stubs. The belt C passes over the pulley 42 and over the pulleys 28 and 29 and contacts the idlers 36 and 39 as seen in Fig.4.

When the handle 54 is moved, either the stub 16 (no gears) or the stubs 16 and 18 (with gears) are rotated in their journal in the head. Due to the eccentricity of the spindles in the stubs, this rotation of the stubs varies the distance relations between the plugs 30 and 31 and thereby permits the device t0 take care of variously sized work as Well as v 42 outwardly when the plugs 30 and 31 are -nioved toward each other and thereby maintains a practically even and uniform tension on the belt in' any position of the spindles. The id1er36 is iournaled on the stud 37 byv pulley 42, the spindles 20 and 24 and the plugs 30 and 31 thereon are rotated in the saine direction and the Work is' thereby rotated in theopposite direction since the plugs 30 and therefore, in operation, the plugs 30 and 3l '-rotate the Work against the fixed abutment 32when the belt is moving.

-u- In prior machining devices of the character deseribed, some sort ot chucking or arbor or centering device isrequired to machine articles; these devices are rarely true and do notl stay true during use even 'it they are 'true when irst made, resulting in inaccurate work 3ll Contact the same and tend to move the ,saine against the fixed abutment plug 32:

and constant expense to keep themtrue as f well as the lirst cost ofthem.

lThe resent invention eliminates allchucls and ot ie'rmechanisms ofi a similarumport 'and provides zit-means directlyl on themachin- 'f ling device to produce accurate work-1 most f economically and conveniently. y

t I am aware that changes can bemade structureas wel] asin the arrangement shown and described WithinA the scope :of the y'ap pended claims, therefore, Without limiting iis myself to the precise structure and arrangei .L1A device of .ment'of theelements asshown and described.

the character'described i`n-V y l 1` cluding a rotatable v'stub and a spindle eccen', trically journaled therein and having :worky contact means and a cable having. one end vthereotl secured to peripheral lsurface of, said stub and ycontacting a portion of said surface,

and a weight on t e other end of said cable to rotate said stub and thereby move said spindle eccentrically to abut said contact means on said work.

2. A device of the character described including a head and pulleys and idlers and a belt for the same and a belt tightening means including a plug movable in a channel in said head and having a stud carrying one of said pulleys, and a spring in said channel and* abutting said plug to move the same and said pulley thereon to tighten said belt.

3. A device of the character described including a plurality of pulleys, some of said pulleysoperating individual journal formof the device for positional movement there- .Y -v of, a positionally fixed article contactingmember norinallyin co-opei'ative relation to definitely position an article inthe device,

means to rotate at least one of the journaled v parts to vary theV co-operative'relation between said article contacting members to release and to confine the article, and means to rotate at leastone of 'said article members to rotate the article.4

contacting 5. A machining device including articlef contacting members each eccentrically vjour naled Within the journal of a journaled para of the device for positional movement thereof fl and a positionally fixed article vcontactingmember normally'in co-operative relation to definitely position an article in the deviceW-fv means to rotate at least one of the journaled parts to varyfthe co-operative relation loev tvveensaid members to release the article,

y bers to rotate the article. 1

naled within the'journal of a journaled part of the device and a positionally fixed article' 'I j contacting member normally in cooperative j relation to deinitely position an article in the device, means to rotate at'lleast one of the journaled parts to vary the coloperative relation of'said members to release the article,

' and means to rotate less than allot said inem- I bers to rotate the article; H i f ILA machining device nii'icluding article contactingmember normally in co-operative i relation to definitely position an article in the device, means to rotate at least one of the journaled parts to vary the co-operative rerotate less than lation of said members to release the article, means between the parts to rotate the same and to move the article contacting lmembers` therein in unison7 and means to rotate less tlialn vall of said members to rotate ,tljieartic e. c Y 8. A' machining device including ljournaled parts to vary the co-operative relation of said members to release the article, tension means'tending to retain said inemi -bei's in (zo-operative relation, means-to vary the co-operative relation betvveensaldjmeml article I.' if contacting members each eccentrically-jour-f-l -naled Within the journal of a journaled part;y p v of the device and a positionally fixed articlel 1, contacting member normally in cooperativei i Vrelation to definitely, position an article inv the device,means to rotate at least one of the sop 'bers to release the article, and means `to rof tate less .than all of said members to .rotate the article.

9. A. machining device including article contacting members each eccentrically jour"I y,naled within the journal of a journaled part of the device and a positionallyflixedarticle contacting member normally` in nio-operative relation to definitely position.- an articlerin the.'y device, means yto rotate atleast one,` of said parts to vary the fro-operative" relation of?` --said members to release thearticle, means be-- v tween said parts to' rotate thesame in unison, 'tension means tending "to .ret-ain, said mein- '..bers in cooperative relation,"and means to rotate less than` p all ofsaid members to` rotate the article'. i 5,1' .i ,l .y i e, l '10; A machining-device ncluding article contacting members arrangedLin-a" triangu-' lar relation to locate ,anl article 'ini a' definite position inthe device, two o said A- members eccentrically j journaled. Within' kthe vjournal 1 of a journaled part of the de'vicfeto be moved niennsgto adjust the 'co-operative relation bely'tiveen' said members to adapt the Adevice for Vdiilerently sized articles, and means to rotate at least one of said article contacting inemil. A` maehiningdevice ncludingf'article i 6.4L machining device 'including article' if, contacting members each eccentrically jourlar relation to vlocate van article in a` definite 'position inthe tleviceftivofoffsaid members eccentrically journaled withinthe journal of a journaled part of ,theflevioe-ztofgb'-i'movedg4 toward eachotherand to'wardf the third one* ot' said members-to.positiontlie article and away from' each .other "fandavvayf fromltlie third member to releasetlie article' ro 4 tative movement of said'-partsu;and,means-to'y allot Said-members'terotatet the article. v f'f Y 12. Amachining device'includi positionally movable `,an d" positionallyr.fixed article contacting members normally incooperative relation -to definitely position an article in the device, each of said pesitionally movable members being cccentrically journaledin a journaled ,part of the device, means 12ol i "afable leo to rotate said parts to vary the coperative relation ot said members to release the article, and a drive me: ns to rotate movable members in unison.

13. A machining devicel including rotatable positionallv movable and positionally fixed article contactingr members normally in co-operative relation to definitely position an article in the device, each of said positionally movable members being eccentrically jonrnaled in a jonrnaled part of the device, means to rotate said parts to vary the co-operative relation ot said .members to release the article` pullevs on rotatable members, a holt over the outside of said pulleys to rotate the rotatable members and tending to retain the saine in co-operative relation, and a ten- .sion means to retain said belt means in driving; contact with said pulleys.

14. A machining` device including,y rotatable laterally spaced stubs` a spindle journaled in each one of said stubs eccentric with the journal of the stub, article contacting members on said spindles and on the device in cooperative relation to definitely position an article in the device and to release the article when the stubs are rotated, and means to rotatesaid spindles to rotate the contacting members thereon to rotate the article.

15. A machining' device including rotatable laterally spaced stubs, a rotatable spindie extending longitudinally through each one of said stubs eccentric with the'journal of the stub, an antifriction bearing means between said spindles and the corresponding one of said stubs,article contacting members on said spindles and on the device in co-operative relation to definitely position an article in the device and to release the article when the stubs are rotated and means to rotate said spindles to rotate the contacting members thereon to rotate the article. i 16. A machining device including;` rotatable laterally spaced stubs. a spindle journaled in each one of said stubs eccentric with the Iiournal of the stub, article contacting members on said spindles and on the device in eo-operative relation to definitely position an article in the device and to release the article lwhen the stubs are. rotated, intermeshing spindles to rotate the contacting members thereon to rotate the article.

17. A machiningr device including rotatable laterally spaced .stubs` a spindle journale'd in each one of said stubs eccentric With the journal ot the stub, article contactingr members on said spindles and on the device in cooperative relation to definitely position an article in the device and to release the article when the stubs are rotated, inter-meshing means between said stubs to rotate-the same in unison and thereby move said spindles and contacting members thereon uniformly 1n relation to each other and to a contactingmember on the device, a'tension moans acting on one of said stubs tending to rotate the same and thereby rotate all ot the stubs to move the spindles and contacting members thereon into contact'with the article,'and means to rotate said spindles to rotate the contacting members thereon to rotate the article.

.18. A machining device including positionally movable and positionally fixed article contacting members normally in co-operative relation to definitely position an article inthe device, each of said positionally movable members being eceentrically journaled in a journaled part ot the device, pulleys on positionally movable article contacting members, idlers in alinement with said pulleys, antitriction means in said idlers, and a belt means over said idlcrs and pulleys.

19. A machining device including rotatable laterally spaced stubs, a rotatable spindle. extending longitudinally through each one of said stubs eccentric with the journal of the stub, an anti-friction bearing means between said spindles and the correspondingr one ot the stubs, article. contact-ing members on the spindles and on the device in co-operative relation to definitely position an article in the device and to release the article when the stubs are rotated, a pulley on each one of said spindles to rotate the same and the article contacting member thereon to rotate the article, idlers in alinement- With said pulleys, anti friction bearing means in said idlers, a belt means over said pulleys and idlers to rotate the same and normally tending to move said pulleys toward each other, and atension means to retain the belt means in driving contact with said pulleys.

ln testimony of the foregoing I afiix my signature.

OTTIS R. BRINEY. 

